AI: The Somnium Files is a detective adventure game in which you investigate the mystery behind a series of murders in a technologically-advanced modern day Tokyo, Japan.

The game starts out with a bizarre murder case where a body is found with the eye gouged out of the skull. Players take on the role of a detective named Kaname Date on the trail of the serial killer behind this murder. Date’s left eye is an artificial eye with an AI unit within it that he uses to solve crimes.

If Date is investigating a case and finds a key witness or suspect, people will not always give up information freely, so Date can enter their memories and extract information. These memories are kind of like dreamscapes. The latin word for “dream” is “somnium,” so in the game the dreamscapes you enter are called somnium.